Improvement in car-trucks



v2-Sh ee'fs--Sheet 2. W. B. ROGERSON. Improvement in Car Trucks. N0. 123,126, Patentedrlan.30,1872.

UNITED STATEs ATENT OFFICE.

VILLIAM ROGERSON, 0E BLOOMINGDALE, NEW JERSEY, ASSIGNOR TO K HIMSELF AND DARIUS WELLS, OF SAME PLACE.

IMPROVEMENT IN CARHTRUCKS Specification forming part of Letters Patent No. 123,126, dated January 30, 1872.

To all whom it may concern:

Beit known that I, W. BOLTON RoGERsoN, of Bloomingdale, in the county of Passaic and State of New Jersey, have invented a newand useful Improved Gar-Truck; and I do hereby declare the following'to be a clear and exact description thereof, suicient to enable others skilled in the art to which my invention appertains to make and use the same, reference being had to the accompanying drawing making part of this specification, in which- Figure l is a top or plan view of the iin proved compound truck, showing one of the axles as broken, the car-table being removed. Fig. 2 is a transverse central section of one of rghe truckframes, showing the formation of the car-wheels, their journals, and their bearings. Fig. 3 is a top or plan View of the compound truck with the car-table in position; and Fig. 4 is an end view of the truck, showing the cartable as mounted upon a series of springs.

Like letters of reference indicate corresponding parts in each ofthe gures.

My invention relates to an improvement in railroad car-trucks 5 and it consists in arranging upon a platform secured upon the frame of a railroad car-truck a spring-table, composed of a top and bottom, between which is interposed a series of springs so arranged that the top can approach the bottom when under pressure, said table being pivoted upon the platform of the truck in such a manner as to rotate and retain the same direction of the car-body, While the truck assumes a position relatively conforming to the curve of the railroad track. Also in the combination of the spring-table and pivoted platformwith the compound truckframe, united together by a draw-bolt and auX- iliary draw-bolts, for permitting the trackwheels to adapt themselves more readily to the curvatures of the track, and of the more gradual adaptation of the car-body to the changed direction of motion, thereby relieving the king-bolt of the sudden strains to which it is subject, and preventing the grinding of the Wheel-iianges against the outer rail 5 and also reducing the concussion, and thereby insuring an easier motion of the car. y

In the drawings, A A indicate the framework of the truck, pivoted together at or about their centers by the draw-bolt B. The openings in the frames A A through which the bolt B passes are larger than the body of the bolt, so that the latter can have a lateral movement on either side, as shown in dotted lines, Fig. l, and permit either ends of the truckframes to approach each other in passing curves, and assume a position corresponding to the curvature of the track upon which the truck is moving. Upon the inner side of each frame nearly opposite each other are arranged one or more bumpers, a a, which receive and deaden jars or concussions when the truckfraines are forced against-each other. O C are end or auxilliary bolts connecting the frames A A of the two trucks together, arranged one on each side of the draw-bolt B. These bolts aid in retaining the frames ofthe trucks together, and being of a size smaller than the openings in the frame, permit each to approach the other, and, in passing curves, that on the inner side to yield to adapt the wheels to the curvature of the track. C C are metallic or rubber reacting-springs surrounding the auxilliary bolts C C, which serve to deaden the jars or concussions usual in trucks when suddenly brought together, and at the same time aid the trucks to assume their parallel position when leaving the curves of a railway track. D is a platform, pivoted upon the top of the truck-frames A A by means of a king-bolt, E, passing down through a metallic casing, E', arranged between the framesAA. This frame is adapted to rotate upon the top of the compound truck-frames, and is prevented from having a full revolution by being provided with one or more stops on its under face, which come in contact with a stop on the top of the truckframes. Upon this frame is rigidly secured and arranged a spring-table, composed of a top, F, and bottom, G, which are separated from each other by means of cushions or springs H H, so that the top can measurably yield to deaden the ordinary concussion of the wheels upon the track, and in passing curves admit ofthe car-body gradually changing its direction from a straight course to the changed direction of the compound truck, and thereby relieve the king-bolt of the sudden and severe strain to which it is subjected when the ordinary truck with single rigid frame is used. The truck-wheels are also, by this construcclaim' as new, and desire to secure by Letters Patent, is-

l. The movable spring-table, composed of the top F, bottom Cf, and springs H, in combination With the pivoted platform D, arranged and operating upon the truck-frames as and for the purpose set forth.

2. The spring-table F G and pivoted platform D, when combined With the frmnesA A', draw-bolt B, and auXillia-ry springbolts C C, for permitting the truck-Wheels to adapt themselves to curvartures of the track Without transposing the direction of the car-body, substan- 'riaillts7 as set forth.

1n witness whereof I have hereunto signed my name in the presence of two subscribing Witnesses.

WM. BOLTON ROGERSON.

Witnesses:

DARIUs WELLs, WHEELER W. PHILLIPS. i' 

